Patents by Inventor Xin Si

Xin Si has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210125663
    Abstract: A memory unit is controlled by a first word line and a second word line. The memory unit includes a memory cell and a transpose cell. The memory cell stores a weight. The memory cell is controlled by the first word line and includes a local bit line transmitting the weight. The transpose cell is connected to the memory cell and receives the weight via the local bit line. The transpose cell includes an input bit line, an input bit line bar, an output bit line and an output bit line bar. Each of the input bit line and the input bit line bar transmits a multi-bit input value, and the transpose cell is controlled by the second word line to generate a multi-bit output value on each of the output bit line and the output bit line bar according to the multi-bit input value and the weight.
    Type: Application
    Filed: October 28, 2019
    Publication date: April 29, 2021
    Inventors: Meng-Fan CHANG, Yung-Ning TU, Xin SI, Wei-Hsing HUANG
  • Patent number: 10636481
    Abstract: A memory cell for computing-in-memory applications is controlled by a first bit line, a second bit line, a word line and a read word line. The read word line transmits an input value. The memory cell includes a plurality of read-decoupled cells. Each of the read-decoupled cells stores a weight and includes a first read-decoupled transistor and a second read-decoupled transistor. The first read-decoupled transistor has a first transistor width and is controlled by the weight. The second read-decoupled transistor has a second transistor width equal to the first transistor width and generates a read bit line signal according to the input value, the weight and the second transistor width. The second transistor width of the second read-decoupled transistor of one of the read-decoupled cells is two times larger than the second transistor width of the second read-decoupled transistor of another one of the read-decoupled cells.
    Type: Grant
    Filed: May 13, 2019
    Date of Patent: April 28, 2020
    Assignee: NATIONAL TSING HUA UNIVERSITY
    Inventors: Meng-Fan Chang, Xin Si, Yung-Ning Tu, Jia-Jing Chen
  • Patent number: 10381071
    Abstract: A multi-bit computing circuit for computing-in-memory applications is controlled by an input port and includes a memory cell array and a capacitor sharing unit. The memory cell array includes a plurality of memory cells connected to the input port. The memory cells store a weight which is formed in two's complement. The capacitor sharing unit includes a plurality of switches, a plurality of capacitors and a sense amplifier. The switches are electrically connected to the memory cells, respectively. The capacitors are electrically connected to the switches, respectively. The sense amplifier is electrically connected to the capacitors and generates a total operational value. The capacitors are located among the switches and the sense amplifier, and the switches are switched to enable the total operational value to be equal to the input value multiplied by the weight. The present disclosure utilizes 8T SRAM cells without an extra DAC structure.
    Type: Grant
    Filed: July 30, 2018
    Date of Patent: August 13, 2019
    Assignee: NATIONAL TSING HUA UNIVERSITY
    Inventors: Xin Si, Meng-Fan Chang
  • Patent number: 9820020
    Abstract: A grooming method and apparatus for a packet optical transport network are disclosed. The method includes: according to an arrangement order of various services, planning a path from a service source node to a service target node in an ith service in a topology set graph; when the path includes a wavelength link in a physical link, removing the wavelength link, and establishing a virtual link between a link source node and a link target node of the removed wavelength link; updating capacities of various links in the path; calculating a weight of a newly established virtual link, and adding the newly established virtual link and the corresponding weight to the topology set graph; and planning a path from a service source node to a service target node in an i+1th service in the topology set graph, until all services are finished.
    Type: Grant
    Filed: April 16, 2014
    Date of Patent: November 14, 2017
    Assignee: Xi'an Zhongxing New Software Co., Ltd.
    Inventors: Xuegang Ou, Xin Si, Jie Chen, Hongbin Yu, Wei Luo, Xingming Li
  • Publication number: 20160249118
    Abstract: A grooming method and apparatus for a packet optical transport network are disclosed. The method includes: according to an arrangement order of various services, planning a path from a service source node to a service target node in an ith service in a topology set graph; when the path includes a wavelength link in a physical link, removing the wavelength link, and establishing a virtual link between a link source node and a link target node of the removed wavelength link; updating capacities of various links in the path; calculating a weight of a newly established virtual link, and adding the newly established virtual link and the corresponding weight to the topology set graph; and planning a path from a service source node to a service target node in an i+1th service in the topology set graph, until all services are finished.
    Type: Application
    Filed: April 16, 2014
    Publication date: August 25, 2016
    Inventors: Xuegang Ou, Xin Si, Jie Chen, Hongbin Yu, Wei Luo, Xingming Li